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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Associate	Matti Karttunen	England	1 2 3 4 5
2	Accounting Manager	Pascale Cartrain	Austria	1 2 3 4 5
3	Owner	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
4	Owner	Paul Henriot	Spain	1 2 3 4 5
5	Accountant	Patricio Simpson	USA	1 2 3 4 5
6	Accountant	Matti Karttunen	Spain	1 2 3 4 5
7	Accountant	Jaime Yorres	Austria	1 2 3 4 5
8	Sales Agent	Matti Karttunen	USA	1 2 3 4 5
9	Owner	Elizabeth Lincoln	USA	1 2 3 4 5
10	Accounting Manager	Georg Pipps	Italy	1 2 3 4 5
11	Accounting Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
12	Owner	Patricio Simpson	Argentina	1 2 3 4 5
13	Sales Agent	Hanna Moos	Bulgaria	1 2 3 4 5
14	Marketing Manager	Hanna Moos	England	1 2 3 4 5
15	Sales Associate	Antonio Moreno	Austria	1 2 3 4 5
16	Sales Representative	Howard Snyder	England	1 2 3 4 5
17	Sales Representative	Jaime Yorres	Germany	1 2 3 4 5
18	Sales Agent	Paul Henriot	France	1 2 3 4 5
19	Sales Agent	Elizabeth Lincoln	Spain	1 2 3 4 5
20	Sales Consultant	Paul Henriot	Italy	1 2 3 4 5
21	Marketing Manager	Matti Karttunen	Germany	1 2 3 4 5
22	Marketing Assistant	Antonio Moreno	USA	1 2 3 4 5
23	Sales Consultant	Jaime Yorres	Bulgaria	1 2 3 4 5
24	Sales Manager	Jaime Yorres	England	1 2 3 4 5
25	Owner	Georg Pipps	Germany	1 2 3 4 5
26	Accounting Manager	Jaime Yorres	Italy	1 2 3 4 5
27	Accountant	Jaime Yorres	England	1 2 3 4 5
28	Accountant	Matti Karttunen	Bulgaria	1 2 3 4 5
29	Sales Consultant	Georg Pipps	Brazil	1 2 3 4 5
30	Marketing Manager	Antonio Moreno	Italy	1 2 3 4 5
31	Sales Consultant	Matti Karttunen	Brazil	1 2 3 4 5
32	Marketing Manager	Patricio Simpson	Italy	1 2 3 4 5
33	Sales Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
34	Owner	Hanna Moos	USA	1 2 3 4 5
35	Sales Manager	Antonio Moreno	Italy	1 2 3 4 5
36	Owner	Antonio Moreno	Germany	1 2 3 4 5
37	Marketing Assistant	Paul Henriot	Germany	1 2 3 4 5
38	Sales Associate	Hanna Moos	France	1 2 3 4 5
39	Accountant	Georg Pipps	Austria	1 2 3 4 5
40	Marketing Assistant	Paul Henriot	Germany	1 2 3 4 5
41	Sales Agent	Antonio Moreno	Argentina	1 2 3 4 5
42	Sales Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
43	Owner	Howard Snyder	USA	1 2 3 4 5
44	Accounting Manager	Paul Henriot	England	1 2 3 4 5
45	Marketing Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
46	Accounting Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
47	Sales Consultant	Pascale Cartrain	USA	1 2 3 4 5
48	Accountant	Antonio Moreno	England	1 2 3 4 5
49	Accounting Manager	Patricio Simpson	USA	1 2 3 4 5
50	Sales Agent	Georg Pipps	Argentina	1 2 3 4 5
51	Sales Manager	Georg Pipps	Argentina	1 2 3 4 5
52	Sales Agent	Patricio Simpson	Brazil	1 2 3 4 5
53	Accountant	Antonio Moreno	Austria	1 2 3 4 5
54	Marketing Assistant	Jaime Yorres	Austria	1 2 3 4 5
55	Marketing Manager	Matti Karttunen	Spain	1 2 3 4 5
56	Sales Associate	Antonio Moreno	Italy	1 2 3 4 5
57	Accountant	Jaime Yorres	Spain	1 2 3 4 5
58	Sales Consultant	Pascale Cartrain	Argentina	1 2 3 4 5
59	Accounting Manager	Jaime Yorres	Germany	1 2 3 4 5
60	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
61	Marketing Assistant	Elizabeth Lincoln	Spain	1 2 3 4 5
62	Sales Representative	Georg Pipps	Austria	1 2 3 4 5
63	Sales Representative	Matti Karttunen	England	1 2 3 4 5
64	Marketing Manager	Pascale Cartrain	Italy	1 2 3 4 5
65	Marketing Assistant	Jaime Yorres	Germany	1 2 3 4 5
66	Sales Representative	Patricio Simpson	Italy	1 2 3 4 5
67	Sales Consultant	Elizabeth Lincoln	USA	1 2 3 4 5
68	Sales Manager	Jaime Yorres	Germany	1 2 3 4 5
69	Sales Manager	Matti Karttunen	Germany	1 2 3 4 5
70	Accountant	Jaime Yorres	Argentina	1 2 3 4 5
71	Sales Associate	Antonio Moreno	France	1 2 3 4 5
72	Accounting Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
73	Marketing Manager	Jaime Yorres	Italy	1 2 3 4 5
74	Sales Agent	Matti Karttunen	Bulgaria	1 2 3 4 5
75	Accountant	Howard Snyder	Argentina	1 2 3 4 5
76	Marketing Manager	Pascale Cartrain	Italy	1 2 3 4 5
77	Accountant	Matti Karttunen	Germany	1 2 3 4 5
78	Marketing Assistant	Hanna Moos	Austria	1 2 3 4 5
79	Owner	Paul Henriot	Argentina	1 2 3 4 5
80	Accounting Manager	Jaime Yorres	France	1 2 3 4 5
81	Sales Representative	Matti Karttunen	Italy	1 2 3 4 5
82	Sales Representative	Patricio Simpson	France	1 2 3 4 5
83	Sales Agent	Antonio Moreno	Italy	1 2 3 4 5
84	Owner	Patricio Simpson	USA	1 2 3 4 5
85	Marketing Manager	Pascale Cartrain	Germany	1 2 3 4 5
86	Sales Agent	Howard Snyder	Bulgaria	1 2 3 4 5
87	Marketing Assistant	Georg Pipps	USA	1 2 3 4 5
88	Sales Agent	Howard Snyder	Brazil	1 2 3 4 5
89	Owner	Howard Snyder	Bulgaria	1 2 3 4 5
90	Sales Associate	Paul Henriot	Spain	1 2 3 4 5
91	Owner	Pascale Cartrain	France	1 2 3 4 5
92	Accountant	Jaime Yorres	Austria	1 2 3 4 5
93	Owner	Hanna Moos	England	1 2 3 4 5
94	Sales Associate	Georg Pipps	Spain	1 2 3 4 5
95	Sales Associate	Antonio Moreno	Brazil	1 2 3 4 5
96	Marketing Assistant	Georg Pipps	Spain	1 2 3 4 5
97	Sales Consultant	Paul Henriot	Germany	1 2 3 4 5
98	Sales Associate	Georg Pipps	Spain	1 2 3 4 5
99	Sales Representative	Elizabeth Lincoln	Germany	1 2 3 4 5
100	Marketing Manager	Paul Henriot	Spain	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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